Paper-cutting machine.



No. 771,448. PATENTED 00T. 4, 1904. D. T. WADHAMS.

PAPER CUTTING MACHINE.

APPLICATION FILED NOV. 20. 1903.

N0 MODEL. 3 SHEETS-SHEET 1.

IIIIIHI' /J Q n @U A i @3 wmvEssEs. INVENTOR Mfg/ v v BY I ./ITToeN Y.

PATENTED OCT. 4, 1904.

No,l 771,448.

D. T. WADHAMS. PAPER CUTTING MACHINE.

APPLICATION FILED NOV'. 20, 1903.

3 SHEETS-SHEET 2.

NO MODEL.

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HVVENTOR M /dh-M( PATENTBD OCT. 4, 1904.

3 SHEETS-SHEET 3.

lllmlun D. T. WADHAMS. PAPER CUTTING MACHINE.

APPLICATION FILED Nov. zo. 190s.

NO MODEL;

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O 0 m mi@ No. 771,448. Patented October 4, 1904.

UNITED STATES PATENT OFFICE.

'DARIUS T. VVADHAMS, OF OSWEGO, NEV YORK, ASSIGNOR TO OSIVEGO MACHINE WORKS, OF OSWEGO, NEV YORK, A CORPORATION OF NEW YORK.

PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 771,448, dated October 4, 1904.

Application filed November 20, 1903. Serial No. 181,901. (No model.)

T ZZ Zlib/0m t "1f/W CUWOWW plain outer surfaces and forming a self-con- 50 Be it known that I. DARIUs T. VVADHAMS, a tained frame without outer supports or excitizen of the United States, residing at Ostensions. Between the tops of the side pieces wego, in the county of Oswego and State of is arranged the frame-cap 9, and to their New York, have invented certain new and fronts are bolted the guide-bars 10 10, retained useful Improvements in Paper-Cutting Main position at their upper ends by distance- 55 chines; and I 'do hereby declare the following blocks 11 11, thus forming knife-slots for the to be afull, clear, and exact description of the knife-stock 12 and knife 13, supported and invention, such as will enable others skilled in swinging with a shearing movement on the IO the art to which it appertains to make and use single link 14, whose upper bearing 15 [its one the same. of the distance-blocks, but is a trie shorter 60 My invention relates to paper-cutting mathan said block to avoid friction and binding. chines; and it consists in a new construction The knife is operated by adjustable pitmen 16, and arrangement of parts by which the connected by universal joints to the knifel5 strength, simplicity, and durability of the stock and to eccentric cranks 17 on the main machine are increased and its operation made driving-shaft 18, carried on the front edges 65 better and easier. of the side pieces in journal-bearings 20.

Important features of my invention are a In vertical pockets or grooves 22 on the innew means for supporting the clamp so that ner faces of the side pieces lit, one on each 2O it rests securely on a counterbalancing resiliside, the clamp-straps 23, secured to the exent cushion and may easily be elevated and treme ends of the clamp 24, which is the only 70 depressed, also certain details in the construcconnection between them, and carrying on tion of the frame and means for supporting their lower ends racks 25, retained in pothe knife. sition by vertical iianges 26 on the rear face- 25 My invention will be understood by referof the front go-between. These racks rest at ence to the drawings herewith, in which the their lower ends on antifriction balance-rol- 75 reference-numerals of the specification indi- 1ers 28, journaled in the free front ends of cate the corresponding parts in all the figures. balance-levers 29, pi'votally secured at their Figure I is a front elevation of a paper-cutrear ends at to the inner faces of the side 30 ing machine constructed according to my inpieces and near said fulcrums supported on vention. Fig. II is a side elevation. Fig. III cushions or resilient elements of any suitable 8o is a vertical section parallel to Fig'. II. Fig'. construction to counterbalance the weight of YIV is a horizontal section showing certain dethe clamp. A suitable form of this arrangetails taken 0n section-line IV of Fig. III.V ment is here shownnamely, spiral balance- In the figures, 1 1 indicate the side pieces springs 32, resting on the heads of studs 33,

of the frame connected by front and back gothreaded to engage with steps or shelves 34 8 5 betweens 2 2. stay-rods 33 at their lower'poron the inner faces of the side pieces, so as to tions, and provided with rear extensions 4 for be vertically adjustable therein to regulate the usual table 5, resting firmly thereon and the tension of the springs to a considerable on the go-betweens. The side pieces are proextent. Guidepieces 35 are pivotally sevided with openings 6 6 to diminish the weight cured to the levers near the lever-fulcrums 90 and improve the appearance and with integral to lit within the coil, if desired, and afford a upper extensions 7 7 of graceful form and guide and a good bearing for the springs. having theirV rear edges formed in parabolic With these racks engage thepinions 36 on curves, so as to be 'of substantially uniform the cross-shaft 37, suitably journaled in the strength throughout their whole extent. side pieces and having on its right-hand outer These side pieces are of a new construction, end the gear 38, engaging with worm 39 on being hollow, and therefore lighter in proporw0rm-shaft 40, supported in bracket 41 and tion to their strength, having substantially provided with hand-wheel 42 convenient to the hand of the operator. One' spring or I other cushion and one balance-lever on one side only can be used; but I prefer two, as here shown. By this construction and arrangement of parts the clamp is well Supported at its extreme ends without the use of the rack-bar and strain and danger of breaking the racks and of course danger of breaking the rack-bar,formerly common,is avoided. The clamp being supported at each end on one of the balance-levers and spring, which can be adjusted so that each spring carries half the weight of the clamp, there isno tendency for the clamp and straps to tilt and bind in the slots in the frame as there is when the clamp is cobalanced by the usual weight or other means which supports the clamp at a single point and in the center. The levers and springs afford a strong resilient support on which the racks and clamp float, so to speak, so that they may be depressed and run up easily and delicately by a single whirl of the hand-wheel. The spring by its position is compressed only to a limited extent in proportion to the movement of the clamp, and therefore its tension is substantially uniform in every position of the lever.

It will be understood that the form and arrangement of the parts of my machine may be varied without departing from the spirit of myinvention and that it may be used with paper cutting machines operated by electricity, steam, or other suitable power, as herein indicated, or by hand-power.

The other parts of the machine here shown are of usual and suitable construction to be used with my invention, and it is not necessary to describe them in detail. The power is applied through pulley 50 and shaft 51, carrying balance-wheel 52, and connected by suitable gears or connections (not shown) to the main gear 53 (desirabl y protected by gearcase 54) on drivingshaft 18. A suitable clutch, such as a friction-clutch, is interposed Vbetween the two parts of the shaft 51, operated by starting-lever 56, having crank-handle 57 to throw on and off the power, saidk power-lever being also connected at rear end by gear 58 and other gears to the band-brake 59 to be tightened on hub 60 on shaft 51 at the same time that the power-lever is operated to release the clutch and throw off the power, positively braking and stopping the knife when it has risen substantially to it-s highest point.

The usual back gage 65 is arranged on the table, adjusted by worm 66 and hand-wheel 67.

69 is the usual side gage, preferably bolted to the table, but may be cast on the frame, if desired.

Having thus described my invention, what I claim as new, and desire to secu re by Letters Patent, is-

1. In a paper-cutting' machine, the combination with a suitable frame, of a table, a

clamp, clamp-straps supporting the clamp, means to elevate and depress the clamp and straps, a balance-lever pivotally supported at one end and having its free end engaging with oneof said straps, a cushion element arranged to engage with said lever, and means to elevate and depress the clamp.

2. In a paper-cutting machine, the combination with a suitable frame, of the paper-supporting table, the clamp, clamp-straps secured to the clamp at its ends and iitted to grooves in the side pieces of the frame, means to elevate and depress the clamp-straps and clamp, a balance-lever pivotally supported on the frame and having its free end engaging with a strap and a cushion element arranged under said lever and adjacent to the leverfulcrum to counterbalance the weight of the clamp with substantially the same tension in all positions of the lever.

3. `In a paper-cutting machine, the combination with a suitable frame and paper-supporting table, of the clamp, clamp-straps secured to the clamp at its ends and fitting suitable guides in the frame, racks on the clampstraps, balance-levers pivotally supported on the frame and having' their free ends engaging with the respective straps, cushion-springs suitably supported and engaging with the respective levers near their points of support to counterbalance the weight of the clamp, andimeans engaging with the racks `for elevating and depressing the clamp.

LI. *In a paper-cutting machine, the combination with a suitable frame, and paper-supporting table, of the clamp arranged above the table, clamp-straps connected to the clamp at its eXtreme ends and connected to each other only by the clamp, said clamp-straps being fitted to reciprocate in suitable guides in the frame, racks on the lower ends of the straps, balance-levers pivotally supported on the frame and having their free ends arranged to engage with the lower ends of the racks, cushion-springs suitably supported and arranged to engage with the levers to counterbalance the weight of the clamp, a shaft, pinions on the shaft engaging with the racks, and an operating -handle connected to the shaft.

5. In a paper-cutting machine, the combination with a suitable frame and paper-supporting' table, of the clamp, clamp-straps connected to the clamp at its extreme ends and connected to each other only by the clamp, said clamps extending downwardly to rest on the free ends of balance-levers, said balancelevers pivotally supported on the frame, balance-rollers on the free ends of the levers engaging with the lower ends of the straps, balance-springs arranged `under the levers and engaging therewith adjacent to the lever-ful- IOO ITO

crums to counterbalance the weight 0f the 6., In a paper-cutting machine, the combination with a suitable frame and paper-supporting table, of the clamp, clamp-straps connected to the clamp and extending downwardly in suitable guides in the frame to rest on the free ends lof balance-levers, said levers pivotally supported at their rear ends on thel frame, antifriction balance-rollers on theforward free ends of the levers to engage with the straps, spiral springs arranged beneath the levers adjacent to the lever-fulcrums, to engage with the levers and counterbalance the clamp, and means to elevate and depress the clamp-straps and clamp.

7. In a paper-cutting machine, the combination with a suitable frame and table, of the clamp, clamp-straps connected to the clamp and extending' downwardly in suitable guides in the frame to rest on the free, front ends of balance-levers, said levers pivotally supported at their rear ends on the frame` spiral springs arranged beneath the levers, shelves on the inner faces of the frame side pieces, studs threaded to be vertically adjustable in the shelves, and supporting the springs on utheir upper heads, guide-pieces pivoted to the levers and downwardly extending' into the spirals and means to elevate and depress the clamp.

8. In a paper-cutting machine, the combination of frame side pieces having vertical grooves, gobetweens connecting the side pieces, vertical flanges parallel to the side pieces on the rear face of the front go-between, the clamp, clamp-straps connected to the ends of the clamp and fitting the grooves, racls on the lower ends of the straps fitting between the lianges and the side pieces, balance-levers pivotally supported on the frame and having their free ends extending under and engaging with the straps, spiral springs suitably supported adjacent to the lever-fulcrums to support the levers, a cross-shaft journaled in the side pieces, pinions on the cross-shaft engaging with the racks, and an operatingwheel connected to the shaft.

9. In a paper-cutting machine, a frame composed of two corresponding side pieces provided with rearward extensions and having vertical grooves on theirinner faces at the rear of the front go-between and extending from near the tops of the side pieces to below the table position thereon, a cap-block, front and rear go-betweens and lower stay-rods connecting the side pieces, the front go-between being provided on its rear face at each end with a vertical iange adjacent to the side pieces and in combination therewith, a paper-table supported on the go-betweens, a clamp arranged above the table, clamp-straps connected to the clamp at its extreme ends and connected to each other only by the clamps` said straps being arranged in the grooves, racks bolted to the lower ends of said clampstraps having teeth on their rear edges and fitting between the flanges and the side pieces, balance-levers pivotally secured to the inner faces of the side pieces yand having their free ends forwardly extending to and under the lower ends of the' racks, antifriction balance- 7o rollers journaled inv the free ends of the levers to engage with the racks, spiral springs suitably supported on the side pieces and engaging with the balance-levers near their pivotal bearings or fulcrum, so as to counter- 7 5 balance the weight of the clamp with a substantially uniform tension at all points, and means to raise and lower the clamp.

10. In a paper-cutting machine, a frame composed of two corresponding side pieces 8O provided with rearward extensions and having' vertical grooves on the inner faces at the rear of the front go-between and extending from near the tops of the side pieces to below the table position thereon, a cap-block and front and rear go-betweens connecting the side pieces, the front go-between being provided on its rear face at each end with a vertical flange adjacent to the side pieces, and in combination therewith a paper-table support- 9o ed on the go-betweens, a clamp arranged above the table, clamp-straps connected to the clamp at its extreme ends and connected to each other only by the clamps, said straps being arranged in the grooves, racks bolted to the lower ends of said clamp-straps having teeth on their rear edges and fitting between the fianges and the side pieces, balance-levers pivotally secured to the inner faces of the side pieces and having their free ends forwardly extending to and under the lower ends of the racks, antifriction balance-rollers journaled in the free ends of said levers to engage with the racks, spiral f springs suitably supported on the side pieces and engaging' with the balance-levers neal 105 their pivotal bearings or fulcrums so as to counterbalance the weight of the clamp with a substantially uniform tension at all points, means to lower and raise the clamp, vertical guide-bars bolted to the fronts of the side pieces above the table forming knife-slots, distance-blocks arranged between the upper ends of said guide-bars and the side pieces, a knife-stock and knife arranged in the knifeslots, a single supporting-link 'pivotally connected to the knife-stock and journaled on one of said distance-blocks, and means to apply power to the knife to lower it with a shearing movement and to raise it.

ll. In a paper-cutting machine, a frame composed of two corresponding hollow side pieces provided with rearward extensions and having vertical grooves on their inner faces at the rear of the front go-between and extending from near the tops of the side pieces to below the table position thereon, of a capblock, front and rear go-betweens and lower stay-rods connecting the side pieces, said front go-between being provided on its rear face at each end with a vertical flange parallel to and IZO engaging with said rear gage to adjust the same; a clamp arranged above the table,clampstraps connected to the clamp at its extreme ends and connected to each other only by the clamps, said straps being arranged in the grooves, racks bolted to the lower ends of said straps, having` teeth on their rear edges and fitting between the said Hanges and the side pieces, curved balan ce-levers pivotall y secured to the inner faces of the side pieces andv having their free ends forwardly extending to and under the lower ends of the racks, antifriction balance-rollers journaled in the free ends of said levers to engage with the racks, integral shelves on the inner faces of the side pieces, studs having upwardly extemling heads and lower shanks threaded to fit said shelves and vertically adjustable therein so as to regulate the tension of the springs supported thereon, spiral springs supported on said studs and engaging' with the balance-levers, near the lever-fulcrums so as to be compressed only slightly and to counterbalance the weight of the clamp with a substantially uniform tension at all points, guide-pieces pivotally secured on said levers adjacent to their fulcrums and downwardly extending' in to the coils; a cross-shaft journaled in the side pieces to the rear of and'adjacent to the racks, pinions on said cross-lever meshing with said racks, a clamp-gear on the righthand outer end of said shaft, a worm engaging with said clamp-gear, a worm-shaft carrying said worm and journaled in an integral bracket on the side piece, a hand-wheel on the front end of said worm-shaft, vertical guidebars bolted to the fronts of the side pieces above the table, distance-blocks arranged between the upper ends of said guide-bars and the side pieces, a knife-stock arranged in the guide-slots formed between said guide-bars and the side pieces, a knife bolted to the lower portion of the guide-block, a single supporting-link pivotally connected to the knifestock and journaled on one of said distanceblocks; front and rear journal-bearings respectively on the front and rear edges of the side pieces below the table, a driving-shaft supported in the forward journal-bearing, ec-

centric cranks on the ends of said drivingshaft, pitmen of adjustable length connecting said cranks by universal joints' to the corresponding' ends of the knife-stock, a main shaft journaled in the bearings on the rear ends of the side pieces, suitable connections between the main shaft and the driving-shaft to cornmunicate power to the latter and to the knife, and a suitable handle arranged at the front of the machine and provided with connections to throw on and 0Hl the power.

12. 1n a paper-cutting machine, the combination with a self-contained frame composed of two correspondinghollow side pieces, having enlarged bases, integral rearward extensions at the table height and integral upward extensions near their fronts, the rear edges of the upward extensions being parabolic curves, of front and rear go-betweens between the middle portions of the side pieces and a framecap secured between the upper ends of the upward extensions,vertical guide-bars secured to the front edges of the upward extensions forming knife-slots, flistance-blocks arranged between the upper ends of the upward extensions andthe upper ends of the respective guide-bars, one of said blocks being cylindrical, a knife-stock and knife fitted to the knife-slots, a single link pivotallyT connected at one end to the knife-stock and having a collar at its opposite or upper end fitting' the distance-block and journaled thereon, said collar being' slightly shorter than the distanceblock, a driving-shaft journaled in the frame, cranks on the driving-shaft, pitmen secured by universal joints to the ends of the knifestock and the respective cranks, means to apply power at will to the driving-shaft, and a paper-table supported on the go-betweens.

13. In a paper-cutting machine, the combination with a suitable frame, of a table, a clamp, clamp-straps supporting the clamp, a balance-lever pivotally supported on the frame and engaging with one of said straps, a cushion element arranged to engage with said lever to counterbalance the weight of the clamp, and means to elevate and depress the clamp.

IOO

ln testimony whereof I affix my signature in 

